PlayThat Tune.java in program

PlayThatTune.java

public class PlayThatTune 

{

              public static void main(String[] args) 

{

   while (!StdIn.isEmpty()) 

    {

           int pitch = StdIn.readInt();

                       double duration = StdIn.readDouble();

                        double hz = 440 * Math.pow(2, pitch / 12.0);

           int N = (int) (StdAudio.SAMPLE_RATE * duration);

           double[] a = new double[N+1];

           for (int i = 0; i <= N; i++) 

           {

            a[i] = Math.sin(2 * Math.PI * i * hz / StdAudio.SAMPLE_RATE);

            }

                      StdAudio.play(a);

        }

    }

}